DOI

  • Marlene M. Lenz
  • Andrei Andreev
  • Larisa Nazarova
  • Liudmila S. Syrykh
  • Stephanie Scheidt
  • Haflidi Haflidason
  • Hanno Meyer
  • Dominik Brill
  • Bernd Wagner
  • Raphael Gromig
  • Matthias Lenz
  • Christian Rolf
  • Gerhard Kuhn
  • Grigoriy Fedorov
  • John Inge Svendsen
  • Martin Melles

Because continuous and high-resolution records are scarce in the polar Urals, a multiproxy study was carried out on a 54 m long sediment succession (Co1321) from Lake Bolshoye Shchuchye. The sedimentological, geochemical, pollen and chironomid data suggest that glaciers occupied the lake's catchment during the cold and dry MIS 2 and document a change in ice extent around 23.5–18 cal ka bp. Subsequently, meltwater input, sediment supply and erosional activity decreased as local glaciers progressively melted. The vegetation around the lake comprised open, herb and grass-dominated tundra-steppe until the Bølling-Allerød, but shows a distinct change to probably moister conditions around 17–16 cal ka bp. Local glaciers completely disappeared during the Bølling-Allerød, when summer air temperatures were similar to today and low shrub tundra became established. The Younger Dryas is confined by distinct shifts in the pollen and chironomid records pointing to drier conditions. The Holocene is characterised by a denser vegetation cover, stabilised soil conditions and decreased minerogenic input, especially during the local thermal maximum between c. 10 and 5 cal ka bp. Subsequently, present-day vegetation developed and summer air temperatures decreased to modern, except for two intervals, which may represent the Little Ice Age and Medieval Warm Period.

Original languageEnglish
Number of pages18
JournalJournal of Quaternary Science
Early online date29 Nov 2021
DOIs
StatePublished - 29 Nov 2021

    Research areas

  • Arctic Russia, chironomids, polar Ural Mountains, pollen, sediment core data

    Scopus subject areas

  • Arts and Humanities (miscellaneous)
  • Earth and Planetary Sciences (miscellaneous)
  • Paleontology

ID: 89335644